Across
- 3. mixture containing small particles of an insoluble solid
- 6. characteristic of metals when it can be drawn into rods and sheets
- 10. the smallest particle of an element that can take part in a chemical reaction
- 11. Electrons that are not confined to any place
- 16. a process occurring at the surface of a liquid, involving the change of state from a liquid into a vapour at a temperature below the boiling point
- 19. a substance that neutralises an acid, producing a salt and water as the only products.
- 20. the temperature at which a liquid turns into a solid
- 21. Group 7 of the periodic table
- 24. Type of bond where the electron gets transferred
- 26. a measure of how much of a solute dissolves in a solvent
- 27. power derived from the utilization of physical or chemical resources, especially to provide light and heat or to work machines.
- 29. number the total number of of protons and neutrons in the nucleus of an atom
- 30. the branch of science concerned with the substances of which matter is composed, the investigation of their properties and reactions, and the use of such reactions to form new substances.
- 32. accompanied by or requiring the absorption of heat.
- 35. when mass is divided by formula mass
- 38. a substance which changes colour when added to acidic or alkaline solutions
- 39. ....'s constant
- 40. the process of boiling a liquid and then condensing the vapour produced back into a liquid
Down
- 1. the electrode in any type of cell at which reduction (the gain of electrons) takes place; in electrolysis it is the negative electrode
- 2. the process when different fluids mix as a result of the random motions of particles
- 4. Group 1 of the periodic table
- 5. characteristic of metals when it can be hammered into sheets
- 7. charged particles made from an atom, or groups of atoms
- 8. a substance that cant be further divided into simpler substances by chemicals
- 9. the temperature at which a liquid boils, when the pressure of the gas created above the liquid equals atmospheric pressure
- 12. shells the outside part of an atom around the atomic nucleus
- 13. the central region of an atom that is made up of the protons and neutrons of the atom
- 14. Type of bond that has a shared pair of electrons
- 15. a substance formed by the chemical combination of two or more elements
- 16. example of a catalyst
- 17. A substance that does not conduct electricity
- 18. if two liquids form a completely uniform mixture when added together
- 22. number the number of the vertical column that an element is in on the Periodic table
- 23. atoms of the same element that have the same proton number but a different nucleon number
- 25. two substances mixed together but not chemically combined
- 28. accompanied by the release of heat.
- 30. the change of a vapour or a gas into a liquid; during this process heat is given out to the surroundings
- 31. a state in which the rate of the forward reaction equals the rate of the backward reaction.
- 33. passing an electric current through ionic substances
- 34. The mass, in grams, of 1 mole of a substance
- 36. speeds up a reaction
- 37. Group8 of the periodic table